參數(shù)資料
型號： MM5451
廠商： Micrel Semiconductor,Inc.
英文描述： LED Display Driver(LED顯示驅(qū)動器)
中文描述： LED顯示驅(qū)動器（發(fā)光二極管顯示驅(qū)動器）
文件頁數(shù)： 4/8頁
文件大?。?/td> 81K
代理商： MM5451
MM5450/5451
Absolute Maximum Ratings
Voltage (any pin) ...................................... V
SS
to V
SS
+12V
Power Dissipation (P
D
)
+25
°
C .........................................................................1W
+85
°
C ..................................................................560mW
Junction Temperature (T
J
) ...................................... +150
°
C
Storage Temperature (T
S
) .......................
–
65
°
C to +150
°
C
Lead Temperature (soldering, 10 sec.) ................... +300
°
C
Micrel
MM5450/5451
4
May 2000
Operating Ratings
Supply Voltage (V
DD
–
V
SS
)....................... +4.75V to +11V
Ambient Temperature Range (T
A
) .............
–
40
°
C to +85
°
C
Electrical Characteristics
4.5V
≤
V
DD
≤
11V, V
SS
= 0V; T
A
= 25
°
C,
bold
values indicate
–
40
°
C
≤
T
A
≤
+85
°
C; unless noted
Symbol
Parameter
Condition
Min
Typ
Max
Units
Power Supply Current
–
25
°
C to +85
°
C, excluding output loads
–
40
°
C to +85
°
C, excluding output loads
8.5
10
mA
mA
Data Input Voltage
V
L
V
H
logic-0 level,
±
10
μ
A input bias
logic-1 level, 4.75V
≤
V
DD
≤
5.25V
V
DD
> 5.25V
Note 2
–0.3
2.2
V
DD
–2
0
0.8
V
DD
V
DD
0.75
V
V
V
Brightness Control Input Current
mA
Output Sink Current
segment off, V
OUT
=
3.0V
segment on, V
OUT
=
1.0V,
Note 3
brightness input = 0
μ
A
brightness input = 100
μ
A
brightness input = 750
μ
A
10
μ
A
0
10
4
25
μ
A
mA
mA
2.0
15
2.7
Brightness Control Input Voltage
input current = 750
μ
A
3.0
4.3
±
20
V
Output Matching
Note 1
%
f
C
t
H
t
L
t
DS
t
DH
t
DES
Clock Input Frequency
Notes 5, 6
500
kHz
Clock Input High Time
Notes 5, 6
950
ns
Clock Input Low Time
Notes 5, 6
950
ns
Data Input Setup Time
300
ns
Data Input Hold Time
300
ns
Data Enable Input Setup Time
100
ns
Reset Pad Current
die
8
μ
A
Note 1:
Note 2:
Output matching is calculated as the percent variation (I
MAX
+ I
MIN
)
÷
2.
With a fixed resistor on the brightness input pin, some variation in brightness will occur among devices.
Maximumbrightness control input current can be 2mA providing it complies with Note 3 and the junction temperature equation.
See Figures 7, 8 and 9 for recommended operating conditions and limits. Absolute maximum for each output should be limited to 40mA.
V
OUT
should be regulated by the user. See Figures 8 and 9 for allowable V
OUT
vs. I
OUT
operation.
AC input waveform specification for test purpose: t
R
≤
20ns, t
F
≤
20ns, f = 500kHz, 50%
±
10% duty cycle.
Clock input rise and fall times must not exceed 300ns.
Note 3:
Note 4:
Note 5:
Note 6:
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